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Samsung CT26F7SWX/XAP Service Manual

Color television receiver
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COLOR TELEVISION RECEIVER
COLOR TELEVISION RECEIVER
Chassis :
K15C
Model :
CT26F7SWX/XAP
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CONTENTS
Precautions
Specifications and IC Data
Disassembly and Reassembly
Alignment and Adjustment
Troubleshooting
Exploded View and Parts List
Electrical Parts List
Block Diagram
Wiring Diagram
Schematic Diagrams

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Summary of Contents for Samsung CT26F7SWX/XAP

  • Page 1 COLOR TELEVISION RECEIVER Chassis : K15C Model : CT26F7SWX/XAP COLOR TELEVISION RECEIVER CONTENTS Precautions Specifications and IC Data Disassembly and Reassembly Alignment and Adjustment Troubleshooting Exploded View and Parts List Electrical Parts List Block Diagram Wiring Diagram Schematic Diagrams...
  • Page 2 ELECTRONICS Samsung Electronics Co., Ltd. JULY.2002 © Printed in Korea AA82-00088A...
  • Page 3 “VOLUME” keys ( Up or Down). The adjust- 6. Cancel the Adjustment Mode by re-pressing ment parameters are listed in the accompany- the “FACTORY” or “Power OFF” keys. ing table, and selected by pressing the CHAN- NEL keys ( Samsung Electronics...
  • Page 4 0 ~ 1 M atri x U S A FIX (Mono) A u tomatic Gain C ontrol 0 ~ 6 3 0 ~ 1 D y nami c S k i n Tone DVDB D VD B right Offs et Samsung Electronics...
  • Page 5 - Hotel mode On/ Off HOTEL MODE - Bule Screen On/ Off without signal BULE SCREEN - SIF Option at Mono sound 2'nd SIF INTERNAL - V-CHIP On/Off V-CHIP - DVD, S-VHS Option AV Option AV + DVD - DEMONSTRATION On/Off DEMO Samsung Electronics...
  • Page 6 7. Do not attempt to connect or disconnect any wires while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts. 8. To protect against shock hazard, use an isola- tion transformer. Samsung Electronics...
  • Page 7 3. Use the P mode key (on the remote control) for the STANDARD picture. 4. Adjust the Screen VR (on the FBT) so that the voltage on the oscilloscope becomes 125+2.5V (See Fig. 4-1). 125 2.5V Fig. 4-1 Samsung Electronics...
  • Page 8 Mode with using CA100. See Fig. 4-4. Fig. 4-4 2. Adjust RG,BG so that the levels are suitable to each local area. (c) High-Light Adjustment 1. Set SCT to 35 FL in the Factory Service Mode with using CA100. See Fig. 4-4 . Samsung Electronics...
  • Page 9 8. Since the 4-pole magnets and 6-pole magnets lines in the center area of the screen. interact, the dot movement is complex (Fig. 4-5). RED/BLUE GREEN BLUE BLUE RED/BLUE GREEN 6-Pole Magnet Movement 4-Pole Magnet Movement Fig. 4-5 Center Convergence Adjustment Samsung Electronics...
  • Page 10 4. Fig. 4-7 4. Adjust with VSL (Vertical-Slope) so that the bottom margin of the picture is 4. Fig. 4-8 5. Adjust with HS (Horizontal Shift) so that the lion-head pattern and CRT centers are aligned. Samsung Electronics...
  • Page 11 Disassembly and reassembly 3. Disassembly and Reassembly 3-1 Back Cover Removal 1. After removing the screws, press the tension rib and pull the cabinet backwards. 2. To reassemble, press the tension rib (see diagram). Samsung Electronics...
  • Page 12 Warning: The FBT is charged with high voltage. Before removing the Anode Cap, discharge the voltage through one of the heat sinks on the main board. 3-3 Speaker Removal 1. Remove the speaker by pressing the tension rib. Samsung Electronics...
  • Page 13 Always lift the picture tube by grasping it firmly around the faceplate, (2) Never lift the tube by its neck. (3) Do not scratch the picture tube or apply excessive pressure. Fractures of the glass may cause an implosion. Samsung Electronics...
  • Page 14 MEMO Samsung Electronics...
  • Page 15 Exploded View & Parts List 6. Exploded View & Parts List 6-1 CT26F7SWX/XAP Code No Description;Specification Q’ty Remark S.N.A AA64-02794A INLAY-CONTROL;26F7,PS SHEET,T0.5 INL/CT AA64-70117B BADGE-BRAND;AL,SS,R2000,25,SILVER CT-633 BADGE AA64-03062A CABINET-FRONT;26F7,G4309,K15C,HIPS,HB AA65-30105A CLAMP-WIRE;NYLON 66N,VO,NTR,15MM CWFC AA61-40113A STOPPER-PCB;-,ABS,HB,NTR. STOPPE 3001-001262 SPEAKER;3W,8OHM,87DB,280HZ AA60-10008A SCREW-TAPPING;-,TH,+,M3,L10,ZP...
  • Page 16 Precautions 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing (READING SHOULD NOT BE ABOVE protective shields.
  • Page 17 14. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheat- ing, and correct any potential hazards. Samsung Electronics...
  • Page 18 Precautions 1-2 Servicing Precautions Warning1: First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Warning2: An electrolytic capacitor installed with the wrong polarity might explode. 1.
  • Page 19 These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Samsung Electronics...
  • Page 20 25Inch 1.0R, +380MG 25 Inch A63QDB891X 29Inch 1.0R, +380MG 29 Inch A68QDN891X001 Power Requirements: AC 120V, 60Hz Antenna Input Impedance: VHF, UHF : Telescopic dipole antenna (75 ohm unbalanced type ) Speaker Impedance 8 ohm, 2W+2W (Dual Type) Samsung Electronics...
  • Page 21 SOUND-AMP (2W x 2CH) IC602 KA5Q0740RT POWER IC (STR) IC801S FIAIR CHILD (0765RT) IC802 KA7632 CUSTOM REGULATOR (5V, 8V, 3.3V) IC202 24C04 EEPROM PC801S TCET1108 / LTV817B PHOTO COUPLER SIF - IC IC101 LA7510 SANYO IC601 MSP3425G Sound Processor Micronas Samsung Electronics...
  • Page 22 Specifications and IC Data 2-3 Semiconductor Base Diagrams ELECTROLYTIC- CONDENSER DIODE SPM456AN(Pin 64) U4468B(Pin 16) MSP3425G(Pin 52) TRANSISTOR SAW-FILTER TRANSISTOR M3953M M9261M KSC5802 KSC815-Y KSA539-Y E B C TRANSISTOR LA7841 TDA6107Q KA7632 KSC2331-Y E C B Fig. 2-1 Semiconductor Base Diagrams Samsung Electronics...
  • Page 23 MEMO...
  • Page 24 9. Wiring Diagram 9-1 K15C VIDEO OUT VIDEO IN SOUND L OUT SOUND R OUT SOUND L IN SOUND R IN B+ OUT HEAT B- OUT G- OUT R- OUT L+ OUT L- OUT R+ OUT R- OUT Samsung Electronics...
  • Page 25 MEMO...
  • Page 26 Block Diagram 8. Block Diagram 8-1 K15C T U NE R -F /S SI F SA W V E R T IC AL UVS815KA-AMP M9261M A M P S/ W V I F SA W M3953M LA7841 LA7510 (Option) I 2C 21/ 22 R G B A M P T D A 6107...
  • Page 27 IC201S Abnormal Normal Replace Abnormal IC201 S Check the FD801S, D807, IC801S Check the or AC-Fuse Check/Replace (33)Pin (H-Drive) IC802 of IC201S Abnormal Normal Abnormal Check the 130V- A Line Check the Normal FBT,D805(D806) Check / Replace Q401 Samsung Electronics...
  • Page 28 Abnormal Check the resistance of R425 Check/Replace Nornal R421,R422,D505 Replace Nornal R425 Check CRT and FBT Abnormal Check/Replace Check IC201S D812,FBT Pin 51,52,53 (R.G.B) Check/Replace Nornal IC201S Check IC201S Pin 49(BCL-IN) Pin50(IK) Abnormal Nornal Check CRT and FBT Samsung Electronics...
  • Page 29 Check IC201S IC602 Pin47(SIF) Pin32(SIF) Abnormal Check Normal R610,R612 Normal Check Check IC101,TUNER IC101,TUNER Check/Replace Abnormal Normal Replace Check IC601 IC201S IC610,R612 Abnormal Check FD801S Normal D807 Check Check/Replace Normal Replace B+ Line IC601 FD801S,D807 5V-B, 8V-B No Power Samsung Electronics...
  • Page 30 Troubleshooting 5-4 Horizontal Lines Appear or Screen Abnormal Check IC301 B+ 16V-C,-13.5V-C Normal Check R304,R305 D301,D302 Check IC201S Abnormal Pin 21,22 (VDN,VDP) Normal Check IC201S Check / Replace IC301 Samsung Electronics...
  • Page 31 Schematic Diagrams 10. Schematic Diagrams 10-1 MAIN (1/4) TP01 TP02 TP03 TP04 TP07 TP12 TP05 TP04 TP11 TP05 TP06 TP06 TP03 TP08 TP10 TP09 TP07 TP08 TP01 TP02 TP09 TP10 TP11 TP12 : Power Line : Signal Line Samsung Electronics 10-1...
  • Page 32 Schematic Diagrams 10-2 MAIN (2/4) TP01 TP02 TP05 TP03 TP04 TP04 TP03 TP05 TP02 TP01 : Power Line : Signal Line 10-2 Samsung Electronics...
  • Page 33 Schematic Diagrams 10-3 MAIN (3/4) TP01 TP01 TP02 CONT- I N _ O U T _ P U T 2 INPUT P U T 2 TP02 : Power Line : Signal Line Samsung Electronics 10-3...
  • Page 34 Schematic Diagrams 10-4 MAIN (4/4) 10-4 Samsung Electronics...
  • Page 35 Electrical Parts List 7. Electrical Parts List 7-1 CT26F7SWX/XAP Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY CHASSIS 4 D803 0401-000005 DIODE;1N4148,100V,300mA,1V,8nS,TAPING 4 D804 0401-000005 DIODE;1N4148,100V,300mA,1V,8nS,TAPING 4 D808 0401-000005 DIODE;1N4148,100V,300mA,1V,8nS,TAPING AA91-01654A ASSY CHASSIS;CT26F6SWX/XAO...
  • Page 36 2001-001114 R-CARBON(S);270OHM,5%,1/2W,AA, 4 C420 2301-001065 C-FILM,MPPF;47NF,55,630V,TP,19 4 R821 2001-001131 R-CARBON(S);33KOHM,5%,1/2W,AA, 4 C312 2305-000149 C-FILM;CF922N100VT104-J-40/105 4 R818 2001-001154 R-CARBON(S);5.1KOHM,5%,1/2W,AB 4 C301 2305-000285 C-FILM,MPEF;220NF,5%,100V,-,5M 4 R805 2001-001170 R-CARBON(S);6.8OHM,5%,1/2W,AB, 4 C205 2305-000289 C-FILM,MPEF;220NF,5%,63V,-,5MM 4 R850 2001-001170 R-CARBON(S);6.8OHM,5%,1/2W,AB, 4 C215 2305-000289 C-FILM,MPEF;220NF,5%,63V,-,5MM Samsung Electronics...
  • Page 37 2701-000142 INDUCTOR-AXIAL;1UH,10%,2.5X3.4 4 J602 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A 4 J103 2701-000142 INDUCTOR-AXIAL;1UH,10%,2.5X3.4 4 J603 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A 4 L301 2701-000142 INDUCTOR-AXIAL;1UH,10%,2.5X3.4 4 J604 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A 4 L302 2701-000142 INDUCTOR-AXIAL;1UH,10%,2.5X3.4 4 J607 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A 4 L404 2701-000142 INDUCTOR-AXIAL;1UH,10%,2.5X3.4 4 J608 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A Samsung Electronics...
  • Page 38 CLAMP-WIRE;-,NYLON6.6,-,-,DATL 4 DZ901 0403-001373 DIODE-ZENER;MTZJ5.1A,4.81V-5.07V,500mW,D 2 CLM/CN AA65-30018A CLAMP-WIRE;-,NYLON6.6,-,-,DATL 4 R422 2008-000206 R-FUSIBLE(S);1OHM,5%,1/2W,AF,T 2 CWFC AA65-30105A CLAMP-WIRE;NYLON 66N,VO,NTR,15MM 3 SOLVEN 0204-000442 SOLVENT;CH3-CH5H-CH396%IM-1000 2 L/QMS AA68-02391A LABEL-QMS;ART-PAPER(90)G,110x24mm 3 SOLDER 0202-000008 SOLDER-WIRE;S63S-D3.0,S63A,D3,63/37 3 FLUX 0204-001024 FLUX;DF-96TVS,-,20%,- 3 SOLDER 0202-000187 SOLDER-WIREFLUX;-,RS60S,D1.2,6 Samsung Electronics...
  • Page 39 0203-001295 TAPE-OPP MASKING;1242,T0.06,W100,L91.4M, 2 STAPLE AA60-40006A PIN-STAPLE;-,-,-,H18,33X17.8X2 2 PE-BAG AA69-01209A BAG;SHEET,25-27,W54,L60,FOAM,OEM. 2 C/SET AA69-01682A CUSHION-SET;26F7,PS FOAMED,C=0.02 ASSY CPT AA91-05292A ASSY CPT;A63QDB891X,SAMSUNG,+380MG 2 TAPE 0203-001303 TAPE-ACETATE;#1554,T0.25,W19,L30000,WHT 2 CRT AA03-00157A CRT COLOR;A63QDB891X,+380MG,SAMSUNG 2 C-Y AA27-00002A MAGNET-CONVERGENCE;JH291-SC-OB,29.1M 2 D-COIL AA27-00219A COIL DEGAUSSING;,25T,1.5OHM,25INCH,110V, 2 D-Y...
  • Page 40 MEMO Samsung Electronics...